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Traffic signal controllers have a variety of communication methods. At present, there are more serial communication, serial communication, four-core telephone communication, and network communication based on TCP/IP protocol.

Serial communication

A serial port is a very common device communication protocol on a computer. Most computers contain two RS232-based serial ports. The serial port is also the common communication protocol of the signal device; at the same time, the serial port communication protocol can also be used to obtain the data of the remote acquisition device and send the control instruction to the remote.

Serial communication installation and debugging is flexible and easy to deploy. So most of the signals are used this way.

Telephone communication

At present, there are also a lot of signalers that use the telephone communication method. This method is more convenient in terms of cost. It can use the existing Hutong communication system or deploy it in places where there is no network or optical fiber.

Telephone communication

Network Communication Based on TCP/IP

With the continuous development of networks and digital technologies, the signaling system based on the TCP/IP protocol is becoming the mainstream development direction. The signalling machine based on the TCP/IP protocol has great advantages in installation, debugging, and post-maintenance. The control aspects of management are also more in line with the need for modular design and ease of use.